# FX_Atan2Idx

## C Specification

      #include <nitro/fx/fx_trig.h>

      u16 FX_Atan2Idx( fx32 y, fx32 x );

## Description

This finds the arctangent of `y`/`x`. The results are returned in u16 format. The units of the result are equal to 1/65536 of a circle (2π radians). (Example: A right angle would be 16384.) Internally, a table is referenced.

## Arguments

`y` | `fx32` format fixed decimal places
`x` | `fx32` format fixed decimal places

## Return Values

Arctangent of y/x

## See Also

`FX_Atan`, `FX_Atan2`, `FX_AtanIdx`

## Revision History

06/16/2004